Project icon: lavishly furnished initial letter with a painting of Ptolemy using an astrolab.

Ptolemaeus Arabus et Latinus

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Work C.2.20

Nicolaus Gugler
Epitome of the Quadripartitum


‘(Paris, BnF, lat. 7395) Ordo ac summa Ptolomei libri I. Caput I. Duplex est ars de astris, astronomia et astrologia. De illa diximus alibi — [IV.9] Ac primum quid Luna dominatur demum (?) Mercurio, etc. Finis.’


A summary of selected chapters of the Quadripartitum.


This text is found in the personal handbook of Nicolaus Gugler, student in astronomy at the University of Wittenberg in 1536-1537 under Joachim Rheticus and Erasmus Reinhold. These notes certainly date from 1537, for the next item in the MS (which belongs to same gathering entitled ‘In astrologiam annotata’, f. 86r-148v) contains calculations for a native of 23 August 1537 (f. 142v). These notes are likely to derive from university lectures, which may have been given by Rheticus or Reinhold, or by Philipp Melanchthon, who lectured on the Tetrabiblos at Wittenberg in 1535 and 1536.